Germanium Ge plano convex lens

plano convex lens
  • Germanium (Ge) can be used in radiation detectors and thermoelectric materials.
  • High purity germanium single crystal has high refractive index, is transparent to infrared, does not pass through visible light and ultraviolet light, and can be used as germanium window, prism or lens for infrared light.
  • The light absorption capacity of germanium increases with the increase of temperature. More than 100℃ has a significant impact on the light transmittance, which seriously affects the performance of the optical system. Germanium components are usually coated with antireflection film because of their high surface reflectivity.
Technical parameters
Items Parameters
Material Germanium (Ge)
Radius of curvature ± 1mm - ± 50000mm ± 1%
Diameter 10mm-200mm ± 0.1mm
Center thickness tolerance ± 0.1mm
Center deviation 3′(we can process to 30 ″with high precision)
Surface accuracy λ/4 — 2λ
Surface quality 60/40
Effective caliber ≥80%
Coating IR AR Coating 8-12μm or according to customer requirements
spectral curve

In addition, we have some Germanium (Ge) plano convex lenses in stock, with preferential prices and excellent quality, which can meet your demand for a small order. 

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